Louisa winterhoff



7 gether and boil, and when coldI take as much LOUISA VVINTERIIOFF, OF HAMMERSMITH, LONDON, COUNTY OF MIDDLESEX, ENGLAND.

IVIETHOD oFoEcoRATmc GLASS.

SPECIFICATION forming part of Letters Patent No. 357,354, dated February 8, 1887.

Application filed May 26,1886.

Serial No. 203,306. (No specimens) Patenterl in England May 14, 185, No. 5,929; in Belgium April 8, 1886, No. 53,658, and in France April 13, 1886, No. 162,761.

T0 all whom it 77%; concern.-

Be it known that I, LOUISA WiN'rERHoFF, of Hammersmith, London, in the county of Middlesex, England, have invented new and useful Improvements in the Decoration of Glass and other Substances for Decorative and Advertising Purposes, of which the following is a specification. i

In carrying out my invention I takewhite orcolored glass and clean it thoroughly in any suitable way and put it aside for use. I then take two and a half ounces of whitestarch, mix it with .a small quantity of cold water, then pour boiling water into the mixture, so as to partially cook the starch and reduce it to a creamy consistency. I then add one pound of glycerine and three fluid ounces of dissolved and filtered gumarabic of the best quality to the boiled starch, and mix these ingredients thoroughly together. With this mixture (which I will call the starch-mixture I coat Indian paper,or any other suitable unsized paper, evenly and over the entire surface of one side and hang it up to dry, and when dry I apply to the same paper two other coats of the starch-mixture in the same way, allowing the paper to dry between the applications of the successive coats. For each application I use a fresh portion of the starchmixture. When the paper is thoroughly dry it is ready foruse. 1 then prepareaprintingink from the following ingredients, mixed together in about the proportions stated: purified leaf-snot, or other suet, one pound; Burgundy pitch, one and one-ha lf ounce; white Venice turpentine, one-half pound mastic in drops, one -,fourth pound; thin lithographic varnish, one-half pound; thick lithographic varnish, one-half pound; beeswax, one-half pound; lithographic-printingink,one and onehalf pound; lamp black, one and one half ounce. I thoroughly mix these ingredients toof the above ink-mixture as will be required for printing and mix it with half its bulk of Brunswick black or other boiled asphalt, with a small quantity of oak or carriage varnish in it. I now draw my picture, portrait, landscape, or other design on grained transfer-paper, or directly upon the lithographic stone, zinc, or other material suitable for lithographic printing; but .I prefer to make the drawing first on grained paper having a-coarse texture and then transferthe design to a lithographic stone or plate, and prepareitfor printing in the usual way. I then print, with the above-described ink, from the design on the lithographic stone on the paper prepared with the starch-mixture, the printing being done on the surface of the paper coated with the starch. I then dampen the prints by placing them between damp paper or cloth, and after the starch-mixture upon the paper becomes somewhatrsoftened by the moisture I place the dampened paper with its printed face upon the cleaned glass plate. I then pass the paper and the glass plate between two elastic rubber rollers under pressure. This operation brings the printed surface of the paper into close contact with the surface of the glass, causing the printing-ink to adhere to the glass. I then sponge the paper over on the back or unprinted surface with cold water, and after allowing it to remain for a few minutes I strip the paper from the glass, leaving the printed impression on the surface of the glass,together with some or all of the starch-mixture. 1 then wash the glass with cold water, to remove all the starch from the glass, when the glass is allowed to dry, and when dry I dust the print over with finely-powdered rosin or asphalt, either separately or mixed together; or I apply to the print any other suitable powdered resinoussubstance. The print upon the glass is now well cleaned, so that no powdered resin or gum is left upon the glass where there is no impression or print. .I then dry the glass in a suitable oven. The glass thus prepared is now ready for a ground to be applied all over able varnish, and allowing it to dry gradually in an oven. The glass tiles are then ready for application to the wall, the roughened surfaceproduced by the sawdust serving to insure the adhesion of the tile to the cement with which the wall is coated.

Having thus described my invent-ion, what I claim as new, and desire to secure by Letters Patent, is

1. A transfer-paper for receiving prints to be transferred to a glass, formed of unsized paper covered withone or more coats of a mixture of starch, gum -arabic, and glycerine, combined in about the proportions stated.

2. A method of transferring a lithographic picture or design to glass, which consists in printing the picture or design upon transferpaper, dampening the paper, applying the paper to the glass with its printed side in contact with the glass, pressing the paper and the glass together, moistening and stripping off the paper from the glass, and dusting the printedimpressionwith finely-powderedresinous substance, substantially as herein shown and described.

paper, applying the paper to the glass with its printed side in contact with the glass, pressing the paper and glass together, nioistening and stripping offthc paper from the glass, and coating the glass with a solution of asphalt, tar, varnish, or other suitable substance that will impartto it a rough or granular surface, substantially as shown and described.

4. Transfer-ink formed of suet, Burgundy pitch, Venice turpentine, mastic, lithographic varnish, lithographic-printing ink, beeswax, and 1an1p-black, combined in about the proportions stated.

The foregoing specification of my new and useful improvement in the decoration of glass and other substances signed by me this 21st day of April, 1886.

LOUISA VVINTERHOF'F;

\Vituesses:

MILTON LUCAS LYNDE, FRANCIS HENRY WHITE. 

